/*
 * Activiti Modeler component part of the Activiti project
 * Copyright 2005-2014 Alfresco Software, Ltd. All rights reserved.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

/*
 * Execution listeners
 */

var KisBpmEventListenersCtrl = ['$scope', '$modal', '$timeout', '$translate', function ($scope, $modal, $timeout, $translate) {

    // Config for the modal window
    var opts = {
        template: 'editor-app/configuration/properties/event-listeners-popup.html?version=' + Date.now(),
        scope: $scope
    };

    // Open the dialog
    $modal(opts);
}];

//Need a separate controller for the modal window due to https://github.com/angular-ui/bootstrap/issues/259
// Will be fixed in a newer version of Angular UI
var KisBpmEventListenersPopupCtrl = ['$scope', '$q', '$translate', function ($scope, $q, $translate) {

    // Put json representing form properties on scope
    if ($scope.property.value !== undefined && $scope.property.value !== null
        && $scope.property.value.eventListeners !== undefined
        && $scope.property.value.eventListeners !== null) {

        if ($scope.property.value.eventListeners.constructor == String) {
            $scope.eventListeners = JSON.parse($scope.property.value.eventListeners);
        } else {
            // Note that we clone the json object rather then setting it directly,
            // this to cope with the fact that the user can click the cancel button and no changes should have happened
            $scope.eventListeners = angular.copy($scope.property.value.eventListeners);
        }

    } else {
        $scope.eventListeners = [];
    }

    // Array to contain selected properties (yes - we only can select one, but ng-grid isn't smart enough)
    $scope.selectedListeners = [];
    $scope.translationsRetrieved = false;

    $scope.labels = {};

    var eventPromise = $translate('PROPERTY.EXECUTIONLISTENERS.EVENT');
    var implementationPromise = $translate('PROPERTY.EXECUTIONLISTENERS.FIELDS.IMPLEMENTATION');
    var namePromise = $translate('PROPERTY.EXECUTIONLISTENERS.FIELDS.NAME');

    $q.all([eventPromise, implementationPromise, namePromise]).then(function (results) {
        $scope.labels.eventLabel = results[0];
        $scope.labels.implementationLabel = results[1];
        $scope.labels.nameLabel = results[2];
        $scope.translationsRetrieved = true;

        // Config for grid
        $scope.gridOptions = {
            data: 'eventListeners',
            enableRowReordering: true,
            headerRowHeight: 28,
            multiSelect: false,
            keepLastSelected: false,
            selectedItems: $scope.selectedListeners,
            afterSelectionChange: function (rowItem, event) {

                if ($scope.selectedListeners.length > 0) {
                    var fields = $scope.selectedListeners[0].fields;
                    if (fields !== undefined && fields !== null) {
                        for (var i = 0; i < fields.length; i++) {
                            var field = fields[i];
                            if (field.stringValue !== undefined && field.stringValue !== '') {
                                field.implementation = field.stringValue;
                            } else if (field.expression !== undefined && field.expression !== '') {
                                field.implementation = field.expression;
                            } else if (field.string !== undefined && field.string !== '') {
                                field.implementation = field.string;
                            }
                        }
                    }

                    if (!$scope.selectedListeners[0].events || $scope.selectedListeners[0].events.length == 0) {
                        $scope.selectedListeners[0].events = [{event: ''}];
                    }
                }
            },
            columnDefs: [{field: 'event', displayName: $scope.labels.eventLabel},
                {field: 'implementation', displayName: $scope.labels.implementationLabel}]
        };
    });

    // Click handler for + button after enum value
    $scope.addEventValue = function (index) {
        $scope.selectedListeners[0].events.splice(index + 1, 0, {event: ''});
    };

    // Click handler for - button after enum value
    $scope.removeEventValue = function (index) {
        $scope.selectedListeners[0].events.splice(index, 1);
        $scope.listenerDetailsChanged();
    };

    $scope.listenerDetailsChanged = function () {
        var listener = $scope.selectedListeners[0];
        if (listener.events) {
            var eventText = '';
            for (var i = 0; i < listener.events.length; i++) {
                if (i > 0) {
                    eventText += ", ";
                }
                eventText += listener.events[i].event;
            }
            $scope.selectedListeners[0].event = eventText;
        }

        if (listener.rethrowEvent) {
            var implementationText = '';
            if (listener.rethrowType && listener.rethrowType.length > 0) {
                if (listener.rethrowType === 'error' && listener.errorcode !== '') {
                    implementationText = "Rethrow as error " + listener.errorcode;
                } else if (listener.rethrowType === 'message' && listener.messagename !== '') {
                    implementationText = "Rethrow as message " + listener.messagename;
                } else if ((listener.rethrowType === 'signal' || listener.rethrowType === 'globalSignal') && listener.signalname !== '') {
                    implementationText = "Rethrow as signal " + listener.signalname;
                }
            }
            $scope.selectedListeners[0].implementation = implementationText;
        } else {
            if ($scope.selectedListeners[0].className !== '') {
                $scope.selectedListeners[0].implementation = $scope.selectedListeners[0].className;
            } else if ($scope.selectedListeners[0].delegateExpression !== '') {
                $scope.selectedListeners[0].implementation = $scope.selectedListeners[0].delegateExpression;
            } else {
                $scope.selectedListeners[0].implementation = '';
            }
        }
    };

    // Click handler for add button
    $scope.addNewListener = function () {
        $scope.eventListeners.push({
            event: '',
            implementation: '',
            className: '',
            delegateExpression: '',
            retrowEvent: false
        });
    };

    // Click handler for remove button
    $scope.removeListener = function () {
        if ($scope.selectedListeners.length > 0) {
            var index = $scope.eventListeners.indexOf($scope.selectedListeners[0]);
            $scope.gridOptions.selectItem(index, false);
            $scope.eventListeners.splice(index, 1);

            $scope.selectedListeners.length = 0;
            if (index < $scope.eventListeners.length) {
                $scope.gridOptions.selectItem(index + 1, true);
            } else if ($scope.eventListeners.length > 0) {
                $scope.gridOptions.selectItem(index - 1, true);
            }
        }
    };

    // Click handler for up button
    $scope.moveListenerUp = function () {
        if ($scope.selectedListeners.length > 0) {
            var index = $scope.eventListeners.indexOf($scope.selectedListeners[0]);
            if (index != 0) { // If it's the first, no moving up of course
                // Reason for funny way of swapping, see https://github.com/angular-ui/ng-grid/issues/272
                var temp = $scope.eventListeners[index];
                $scope.eventListeners.splice(index, 1);
                $timeout(function () {
                    $scope.eventListeners.splice(index + -1, 0, temp);
                }, 100);

            }
        }
    };

    // Click handler for down button
    $scope.moveListenerDown = function () {
        if ($scope.selectedListeners.length > 0) {
            var index = $scope.eventListeners.indexOf($scope.selectedListeners[0]);
            if (index != $scope.eventListeners.length - 1) { // If it's the last element, no moving down of course
                // Reason for funny way of swapping, see https://github.com/angular-ui/ng-grid/issues/272
                var temp = $scope.eventListeners[index];
                $scope.eventListeners.splice(index, 1);
                $timeout(function () {
                    $scope.eventListeners.splice(index + 1, 0, temp);
                }, 100);

            }
        }
    };

    // Click handler for save button
    $scope.save = function () {

        if ($scope.eventListeners.length > 0) {
            $scope.property.value = {};
            $scope.property.value.eventListeners = $scope.eventListeners;
        } else {
            $scope.property.value = null;
        }

        $scope.updatePropertyInModel($scope.property);
        $scope.close();
    };

    $scope.cancel = function () {
        $scope.property.mode = 'read';
        $scope.$hide();
    };

    // Close button handler
    $scope.close = function () {
        $scope.property.mode = 'read';
        $scope.$hide();
    };

}];